Harold Rojas
Portfolio

Data Scientist skilled in Python, SQL, Pandas, Plotly, Excel and Power BI @HaroldRojas

Winning the
#100daysofpython Challenge

I emerged victorious in the #100daysofpython challenge organized by the Python La Paz-Bolivia community, clinching the top score without a single day missed and being honored as the first-place winner.

Covid-19 Data
Exploration in SQL

In this project, we delve into global COVID-19 data analysis using SQL Server as our tool of choice. To uncover valuable insights, we apply various techniques, including table joins, common table expressions (CTEs), temporary tables, windows functions, aggregate functions, view creation, and data type conversion.